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Answer:
diameter of semicircle? ---> 30cm
perimeter- pi*r ----> 3.14159265 x 15 ---->47.12 cm
Step-by-step explanation:
answer: The wingspan is 36 m.
Using a proportion to solve this, we write the scale factor as a ratio first: 19/38, since 19 is the size of the model's length and 38 is the real length. For the second ratio, we have 18 for the size of the model wingspan and x for the real wingspan:
19/38 = 18/x
Cross multiply:
19*x = 38*18
19x = 684
41136 its your answer you multiply 10284 times four and that what you get
It is 31.................
